I have downloaded trial cs5 and install it but it wont start, I get this mesage: the application failed to initialize properly (0xc000001d).Click ok to terminate the application.I have a modest machine 2600 barton (athlon) with 1,5 G ram and 64 ram grafic card.I had cs4 trial and it works perfectly so I thought this would at least start.

Same here, I installed photoshop cs5 trial two times and cannot run it - application failed to initialize properly xc000001d. My PC has SSE. I am seeing this problem in many places in the web, but no success story of repairing it. I would gladly test photoshop cs5, but I cannot even start it...

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One more thing - I don't have SSE2, only SSE. Does Photoshop CS5 need SSE2 ?

FWIW, I had the same issue when i tried running the beta of Photoshop on a very similar system (though mine had a 2500+ barton) but they weren't able to reproduce it and i never managed to get Photoshop to run on that system (it's #2457251 in case your interested)

Is it possible that I got some 64 bit version and my procesor is 32 bit.I read here that minimum system requirement is "Intel® Pentium® 4 or AMD Athlon® 64 processor".To me this is a clear message that there is no 32 bit version which is completely strange, do we have to bay a new machine with newest cs?

My procersor does not suport SSE as far as I can tell, I had install that wcpu330 program and I cannot find anywhere that it suports.What should be my next step?Sorry that it seems like I asked twice I didnt see youre answer at first you have been most helpfull.

You answered the question regarding 32/64 bit. I see no answer of the error everyone is reporting. I've run CS2 & CS3 with no problem, but when I get the trial version of CS5 everything falls apart in Adobe's ability to solve this error. What's causing the application failure that is so widespread? And what is the fix? This is associated with CS5 only, so there has to be an answer from the Adobe family.